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Finding the Fourth Proportional to 1,762.24, 2,643.76 and 666.56

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Solution

The fourth proportional to 1,762.24, 2,643.76 and 666.56 is: 999.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,762.24 : 2,643.76 = 666.56 : x
  2. Step 2: Convert to fraction form
    1,762.24/2,643.76 = 666.56/x
  3. Step 3: Cross multiply
    1,762.24x = 2,643.76 × 666.56
  4. Step 4: Simplify right side
    1,762.24x = 1,762,224.67
  5. Step 5: Solve for x
    x = 1,762,224.67/1,762.24
  6. Step 6: Final answer
    x = 999.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.